Serves as portable Power bank ( powerbank ) Wireless Type: None Vocalism Principle: Dynamic Volume Control: Yes Control Button: No Codecs: Apt-X HD Brand Name: PJD Style: Ear Hook Communication: Wireless Use: Portable Media Player, Mobile Phone, Aviation, COMPUTER, Dj, Gaming, Sports, Audiophile, Travel, PROFESSIONAL, HEARING AID Function: Waterproof, Noise Cancelling, Microphone, LED Display Place of Origin: Guangdong, China Cord Length: None Waterproof Standard: IPX-6 Active Noise-Cancellation: Yes Product name:: tws Stereo headset headphone Style:: In-Ear Version: 5.0V+EDR Earphone & Headphone Charging time: 1 hours Working time: 10 hours Earbuds battery: 100mah Charging Case Battery: 950mah Speaker impedance: 8MM 32Ω Input voltage/current: 5V/1A